Applicator brush



FIG. 1 is a front, left side perspective view of my new design for an applicator brush;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is right side elevation view thereof;

FIG. 6 is a back elevation view thereof; and,

FIG. 7 is a front elevation view thereof.

The broken lines indicate parts of the applicator brush which are for illustrative purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for an applicator brush, as shown and described. 